"You would probably need to lead the way so I don't get too lost. But sure."

A race was simple enough. And as long as they didn't go too far it should be fine, with Tikki in her bag and all, so Marinette knew the kwami was safe and hidden. She had done some gym classes even back home and all. She was more of a klutz outside of being Ladybug but even she could manage a race. Probably.